In September 2017, we supply the first two DEWA® plastic chain scrapers with our V-trough skim channel (hand-lever operated) to ARA in Oftringen (Switzerland). In the next two years all old bridge scrapers will be replaced by our DEWA® belt scrapers with skim gutters. Thereby, the discontinuous sludge removal will be replaced by continuous sludge scraping into the final setting basin of a 44 x 8 m size.

We would like to thank our Swiss partner and our common customers for its trust in us and are looking forward to a successful cooperation in the project implementation.

Supply and assembly of DEWA® plastic chain scraper systems including built-in fittings in the preliminary setting basin at the sewage treatment plant in Berlin-Wassmannsdorf

In January 2015 we successfully commissioned the first two of a total of 12 DEWA® plastic chain scrapers at the sewage treatment plant in Berlin-Wassmannsdorf. In September 2017, the last two systems will be commissioned. Then all the old systems will be replaced by DEWA® belt scrapers. The low-wear DEWA® systems remove bottom sludge and top scum in the preliminary setting basin and in the central basin of a 50 x 10 m size.

We would like to thank the Berlin Public Waterworks for their trust in us and a fruitful cooperation during the project execution.

The first plastic chain scrapers installed in 2009 were followed by 8 other scrapers commissioned in the summer of 2016. Today 10 DEWA® bottom-sludge scrapers remove the activated carbon powder sludge from the sedimentation tanks to the sludge hoppers of the recirculation pumps and ensure a perfect elimination of traces at the wastewater treatment plant in Mannheim.

We would like to thank our client and the end customer for their trust in us and a fruitful cooperation during the project execution.